Re: :test #'something-specific

"Carl Taylor" <carltaylor@xxxxxxx> writes:

> Is there any advantage to adding a specific :test argument when it's
> not really needed? For example:
>
> (delete-duplicates "ABBBBFFGEEEADCBACC" :test #'char=)
> versus
> (delete-duplicates "ABBBBFFGEEEADCBACC")

Well, if this was, as it presumably would be:

(delete-duplicates some-var :test #'char=)

vs

(delete-duplicates some-var)

The former will error if any of the elements of the sequence are not
characters. Which might be considered a feature if you want to detect
the type error earlier and a bug if you want this call to be more
forgiving.

-Peter


--
Peter Seibel * peter@xxxxxxxxxxxxxxx
Gigamonkeys Consulting * http://www.gigamonkeys.com/
Practical Common Lisp * http://www.gigamonkeys.com/book/
.

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